qimgv-plus v2.3.1

New Features & Improvements

• File Renaming: Added a "Rename" option to the image viewer and Folder Grid context menus.
• Directory Manager Performance: Migrated file and directory indexing in DirectoryManager to use hash-maps (QHash), replacing linear $O(N)$ lookup scans with $O(1)$ operations to improve performance on large directories.
• UI Reload Optimizations: Optimized settings updates to bypass model and thumbnail view reloading unless layout-critical parameters are modified.
• StyleSheet Caching: Cached the main stylesheet template in memory to eliminate redundant resource file read operations.

Bug Fixes

• Folder Thumbnail Loading: Fixed an issue where folder thumbnails failed to load or got stuck in directories with multiple subfolders by correcting path normalization and task queue management in DirectoryPresenter.
• Filter Name Display: Fixed an issue where toggling or selecting the GPU CAS (Contrast Adaptive Sharpening) scaling filter displayed a generic Filter: Configured 3 message instead of its proper name (FidelityFX-CAS (GPU)).